Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
  • B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
  • B63B39/06—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
  • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
  • B63B1/32—Other means for varying the inherent hydrodynamic characteristics of hulls
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
  • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
  • B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
  • B63B1/18—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydroplane type
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
  • B63B1/00—Hydrodynamic or hydrostatic features of hulls or of hydrofoils
  • B63B1/16—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces
  • B63B1/24—Hydrodynamic or hydrostatic features of hulls or of hydrofoils deriving additional lift from hydrodynamic forces of hydrofoil type
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
  • B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
  • B63B39/06—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water
  • B63B39/061—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water by using trimflaps, i.e. flaps mounted on the rear of a boat, e.g. speed boat
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63H—MARINE PROPULSION OR STEERING
  • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
  • B63H25/44—Steering or slowing-down by extensible flaps or the like

Definitions

• the invention pertains to a device for dynamically controlling a running trim and/or steering of a boat having at least one hull with a stern.
• the device comprises a housing, transmission means and an interceptor member.
• the interceptor member is linearly displaceable in relation to the housing.
• the housing is adapted to be attached to the hull of the boat.
• the present invention is applicable for dynamically controlling the running trim and/or steering of boats, ships or any large vessel or watercraft.
• the invention is especially applicable for planing or semi-planing boats.
• a number of devices that are used for dynamically controlling the running trim and steering of a boat are known in the art. Most common are trim tabs or trim flaps. Interceptors become however more and more common. These interceptor devices generally have an interceptor member, an actuator and a power supply means. The interceptor can be arranged directly on the boat hull or in a housing. Commonly the actuator acts upon the interceptor member to linearly displace it in water for dynamically controlling the running trim and steering of the boat. Further, to attain the desired trim and steering control/effect the interceptor member is accordingly displaced to a suitable level in water.
• the object of the present invention is to provide an inventive device for dynamically controlling a trim and/or steering of a boat, ship or vessel. It is desired that the inventive device is a compact, reliable device that is easy to assemble and mount on the outside of the hull of the boat.
• the invention relays upon the idea to use a transmission mechanism between the actuator and interceptor member.
• Said transmission mechanism is constructed such that it cancel out the side forces upon the interceptor member, such that it thereby can move between its retracted and extracted position, without any guiding means and without getting skew.
• the device according to the invention comprises an actuator, an actuating means, and an interceptor member.
• Said actuator interacts with said actuating means, which interacts with said interceptor member such that said interceptor member is continuous and linearly displaceable between a retracted and an extracted position.
• the inventive device is characterised in, that said actuating means is continuously displaceable and is adapted to interact with a first and a second crankshaft, whereby a displacement of said actuating means causes a rotation of said first and second crankshaft, wherein said first and second crankshaft are arranged such relative each other that they rotate in opposite direction when said actuating means acts thereon, and whereby said crankshafts are adapted to interact with said interceptor member, such that a rotation of the crankshafts consequently leads to a displacement of said interceptor member.
• crankshafts are further arranged such that they interact upon the interceptor member on essentially the same height, i.e. distance from the interceptor members lower edge, wherein the lower edge is the edge acting in the water.
• Essentially the same height is defined such that the lowest point of an interaction surface between the highest placed crankshaft and the interceptor member never is above the highest point of the lowest positioned placed crankshaft.
• crankshafts are preferably arranged such that they interact upon the interceptor member on essentially the same distance to a centreline of the length of the interceptor member. Essentially the same distance to the centre line has the same tolerances as the height position of the interceptor member.
• the interceptor member is continuously and linearly displaced and said displacement is perpendicular to the length direction of the interceptor member.
• crankshafts are adapted to interact with said interceptor member, such that the side forces caused by the rotation of the crankshafts are parallel to the length direction of the interceptor member and thereby cancel each other out. This will stabilise the interceptor member, wherein the use of a guiding means becomes excessive. It is thereby advantageous that said first and said second crankshaft are arranged on a distance to each other in the length direction of the interceptor member.
• first and second crankshaft interacts upon said interceptor member on the same height of the interceptor member, this is however not always beneficial in order become a high density construction of the device and also not always necessary in order to achieve the desired effect. As long as the height of the interaction area between the cranks and the interceptor member overlap each other, a sufficient force cancellation of the side forces will take place.
• Suitable crankshafts are provided with a central shaft with a first and a second crank in each end of said central shaft, wherein said first cranks interact with said actuating means and said second cranks interact with said interceptor member, wherein said first and second cranks are displaced relative each other.
• the first and the second crank are advantageously displaced with about a quarter of a revolution relative each other.
• Such a configuration of the first and second cranks on the central shaft enables that the displacement of the actuating means is perpendicular to the displacement of the interceptor member.
• Other relation between the first and the second crank is possible, whereby the displacement of the actuating means thereby will be in a different angle to the displacement of the interceptor member.
• Having a displacement of the actuating means, parallel to the length direction of the device, is convenient, because the actuator can thereby also be placed lengthwise in the device and the mechanism to transmit the rotating movement of the actuator to the linear movement of the actuating means with a screw connection. This also enables a lengthwise arrangement of the actuator, enabling it to fit within a housing of the device.
• crankshafts are arranged in the said device such, that the respective second cranks move in the direction of the displacement of the interceptor member essentially synchronously with the other. This synchronised movement of the crankshafts does not cause any skew movement while the crankshafts are moving and thus prevents the interceptor member from getting stuck or jammed.
• first cranks are provided with corresponding first sliding shoes.
• Said first sliding shoes are adapted to slide in corresponding grooves in said actuating means.
• the arrangement of the sliding shoes in the corresponding grooves decreases the friction between the crankshaft and the actuating means as there is no rotary motion between them.
• the second cranks are provided with corresponding second sliding shoes.
• Said second sliding shoes are adapted to slide in corresponding grooves in said interceptor member.
• the arrangement of the sliding shoes in the corresponding grooves decreases the friction between the crankshaft and the interceptor member as there is no rotary motion between them.
• the actuating means is displaceable in a direction perpendicular to the direction of the displacement of said interceptor member. Such an arrangement facilitates an optimal force distribution.
• the inventive device is provided with housing, in which said actuator, actuating means and said interceptor member is arranged, whereby the interceptor member is positioned at least partial outside said housing in its extracted position and positioned inside said housing in its retracted position.
• said housing comprises a back plate and a front plate and wherein the actuating means, the crankshafts and the interceptor member are arranged in-between said back and said front plate.
• said back plate of the inventive device is provided with a lip/seal which extends perpendicular to the displacement of said interceptor member and said lip/seal is adapted to seal between said back plate and said interceptor member.
• the lip/seal protects the device from the high pressure that occurs on the back of the device.
• the lip/seal also acts as a scraper and scrapes off any dirt or marine growth, e.g. barnacles that are attached to the interceptor member.
• the lip/seal increases the lifecycle of the whole device by protecting it from unnecessary wear caused by high pressure and contaminations.
• the actuator is preferably mounted in between said back and said front plate in the device.
• the actuator is preferably submersible. Due to the inventive device, which enables the use of a smaller actuator then for previously known devices, the actuator can be provided within the housing (in between the front and the back plate) of the device, without the housing becoming unjustifiably large.
• Rollers can be arranged in-between the interceptor member and the front and the back plate, in order to decrease the friction there between.
• a holding member is advantageously mounted on the interceptor member, wherein said second cranks are adapted to act upon said holding member such that said holding member is displaced half the distance of the displacement of the said interceptor member.
• the holding member is preferably arranged between the interceptor member and said front plate. Further, the holding member could be provided with multiple slots to house a plurality of rollers acting as bearings between the interceptor member and the front plate, wherein the bearings reduce the frictional forces between the interceptor member and the housing. Thus the frictional forces acting on the device are reduced and a smoother movement of the interceptor member is achieved.
• the actuator of the said device is an electric actuator.
• An electric actuator can be fitted within the housing of the device, wherein no additional grooves/slots/holes are required on the boat hull.
• the device is possible to use with other art of actuators such as hydraulic or pneumatic actuators, an electric actuator is however preferred.
• the device of the present invention is applicable for dynamically controlling the running trim and/or steering of boats, ships or any large vessel or watercraft.
• Figure 1 illustrates an exploded and perspective view of a device for the dynamic control of the running trim and/or steering of a boat
• Figure 2a, b illustrate a retracted and a extracted position of the device
• Figure 3a, b illustrate the transmission means from a first view corresponding to a retracted (3a) and an extracted (3b) position of the device
• Figure 4a, b illustrate the transmission means from a second view corresponding to a retracted (4a) and an extracted (4b) position of the device
• Figure 5a, b illustrate the displacement of the interceptor member.
• Figure 1 a illustrates a first view of an assembled device 1 according to the invention and figure 1 b illustrates a second view of the assembled device 1 , and figure 1 c illustrates an exploded and perspective view of the device 1 used for dynamically controlling the running trim and/or steering of a boat, in accordance with an embodiment of the invention.
• the device 1 comprises an actuator 2, an actuating means 3, and an interceptor member 4.
• the actuator 2 can be of any type known in the art. Some examples of such an actuator are an electric, pneumatic or hydraulic or a combustion driven actuator. However an electric actuator is preferred and also shown.
• the actuator 2 is adapted to be arranged in a preformed slot 31 provided in the back plate 16.
• the device 1 further comprises a first crankshaft 5 and a second crankshaft 6.
• the first crankshaft 5 includes a centre shaft 27, a first crank 1 1 and a second crank 12.
• the first crank 1 1 is provided at a first end of the centre shaft 27 and the second crank 12 is provided at the second end of the centre shaft 27.
• the first crankshaft 5 is provided with a first sliding shoe 7 that is attached to the first crank 1 1 and a second sliding shoe 8 that is attached to the second crank 12.
• the second crankshaft 6 includes a centre shaft 28, a first crank 13 and a second crank 14.
• the first crank 13 is provided at a first end of the centre shaft 28 and the second crank 14 is attached at the second end of the centre shaft 28.
• the second crankshaft 6 is provided with a first sliding shoe 9 that is attached to the first crank 13 and a second sliding shoe 10 that is attached to the second crank 14.
• the first and the second crankshaft 5, 6 are operably coupled to the actuating means 3 and which together forms a transmission means 30 (shown in Figures 2 and 3) at which actuator 2 acts. Further, the transmission means 30 is operably connected to the interceptor member 4 over the sliding shoes 8, 10 provided on respective second cranks 12, 14 to act thereon.
• the device 1 also comprises a back plate 16, at which the components of the transmission means 30 is provided.
• a holding member 18 and a front plate 17 are also provided, wherein said front plate 17 forms a housing of the device 1 together with the back plate 16.
• a lip 15 is provided at the bottom edge of the back plate 16.
• the lip 15 extends perpendicularly to the displacement of the interceptor member 4.
• the lip 15 is adapted to seal between the back plate 16 and the interceptor member 4, to protect the device 1 from high pressure water and to act as a scraper to remove dirt and/or marine growth.
• the lip 15 can be made up of any suitable material.
• the back plate 16 is also provided with a number of pre-drilled holes to conveniently attach the housing of the device 1 to the hull of the boat.
• the device 1 has a length L which is essentially the length of the interceptor member 4. This is enabled since no guiding means is needed to provide the linear displacement. Further the height H of the device is compact, because the actuator is provided inside the device 1 and no extending guiding means, as in some prior art, is needed, due to the inventive transmission means 30.
• the first and the second crank 1 1 , 12 interacts with the interceptor member on essentially the same height h and symmetrically arranged about the interceptor members centreline c, i.e. each arranged half the distance d from the centreline c.
• Forces occurring from the crank 1 1 , 12 in the length direction of the device cancel thereby each other out, wherein a linear displacement is enabled without any guiding means and with just one actuator 2. Because the forces, in the length direction of the device, from the first and the second crankshaft 1 1 , 12 are directed in opposite direction relative each other and are essentially equally large, these will cancel each other out.
• Rollers 16, 32 are provided between the interceptor member 4 and the front plate 17 respectively the interceptor member 4 and the back plate 16. The rollers decreases the friction between the parts they are placed.
• the rollers between the interceptor member 4 and the front plate 17 are arranged in slots 33 in the holding member 18. Wherein the holding member 18 is displaced half the distance of the interceptor member 4 during a retraction and extraction, wherein a "perfect roller rolling motion" is achieved.
• Figure 2a illustrates the device 1 having the interceptor member 4 in a retracted position
• figure 2b illustrates the device 1 having the interceptor member 4 in an extracted position
• the front plate 17 is removed from figures 2a and b in order to expose the interior of the device 1 .
• figure 2b is a part of the interceptor member 4 and the holding member 18 cut out.
• Figures 3a and b illustrate the transmission means 30 of the device 1 in a position corresponding to the retracted position of the device shown in figure 2a.
• the actuator 2 is just marked with outlines in figures 3a and b in order to show otherwise thereby hidden features.
• Figures 4a and b illustrate the transmission means 30 of the device 1 in a position corresponding to the extracted position of the device shown in figure 2b.
• Figure 5a discloses a cut out of the interceptor member 4 in a retracted position
• figure 5b discloses the same cut out of the interceptor member 4 in a extracted position.
• the actuator 2 is operably connected with the actuating means 3. Further, the actuator 2 comprises a shaft portion that is designed as a lead screw 20.
• the lead screw 20 has a continuous thread 21 and the actuating means 3 has a complimentary threaded section 22 which facilitates the connection of the actuating means 3 to the actuator 2.
• first crankshaft 5 and the second crankshaft 6 are connected with the actuating means 3 by a first preformed groove 25 and a second preformed groove 26, respectively, which are provided in the actuating means 3.
• the first preformed groove 25 is adapted to receive the first sliding shoe 7 of the first crankshaft 5
• the second preformed groove 26 is adapted to receive the first sliding shoe 10 of the second crankshaft 6.
• the first and the second groove 25, 26 in the actuating means 3 are arranged such that the first sliding shoes 7, 10 can slide in opposite directions relative each other and perpendicular to the movement of the actuating means 3.
• a first and a second groove 35, 36 are provided on the interceptor member 4, said first and second groove 35, 36 in the interceptor member 4 are adapted to receive the second sliding shoes 8, 9.
• the grooves 35, 36 in the interceptor member 4 are shown in figure 1 c, and are arranged perpendicular to the first and second groove 25, 26 in the actuating means 3, such that the second sliding shoes 8, 9 can slide therein.
• the actuating means 3 moves in a first direction that is parallel to the length direction of the device 1 . This movement is realised using the lead screw 20, which is as described above. Further, the actuating means 3 which is operable connected with the interceptor member 4 displaces the interceptor member 4 in a second direction which is perpendicular to the first direction of displacement of the actuating means 3.
• first crankshaft 5 and the said second crankshaft 6 are operably connected to the actuating means 3.
• This arrangement is made in such a manner that the first crankshaft 5 and the second crankshaft 6 acts on different heights upon the actuating means 3.
• the second cranks 12, 14 of respective crankshaft 5, 6 act upon the interceptor member 4 on essentially the same height h (shown in figure 1 c), i.e. same distance from the lower edge of the interceptor member 4.
• Essentially the same height is defined such that the lowest part of the highest positioned sliding shoe never is above the highest part of the lowest positioned sliding shoe.
• the first and second cam shaft interacts with the interceptor member on exactly the same height.
• the same height is enough to achieve the desired effect to avoid using guiding means.
• the movement causes the first crankshaft 5 and the second crankshaft 6 to rotate in an opposite direction relative to each other.
• the crankshafts 5, 6 rotate in opposite directions relative to each other, whereby, the second sliding shoes 8, 10 of the first and second crankshafts 5, 6 slide in their respective groove 35, 36 (shown in figure 1 c) in the interceptor member 4 and act thereupon, such that the interceptor member 4 is displaced.
• the second cranks 12, 14 interact additionally upon the holding member 18, such that the holding member 18 is displaced half the distance of the interceptor member 4 during a retraction or extraction of the interceptor member 4. Corresponding grooves therefore are provided in the holding member 18.
• the actuator 2 can be operated in a reverse direction.
• the device 1 of the present invention is primarily used for controlling the running trim and/or steering of a boat. As mentioned above, the device 1 is operated suitably to gain the desired effect of trim control of the boat. Further, the device 1 is used to control the steering of the boat to change the heading of the boat and/or heeling when turning. Moreover, the device 1 is adapted to be used with a mono hull boat or with a boat with multiple hulls.
• the device 1 can be connected to and controlled from a control system of any previously known type.
• the control system can be a PLC/computer based system present on board a boat or vessel.
• one single device according to the invention or several cooperating devices according to the invention can be used.
• the device or the cooperating devices is/are activated to the degree necessary in order to achieve the desired running trim of the boat, e.g. in order to avoid the bow of the running boat rises to high.
• a pair of devices according to the invention are suitably used.
• one of the devices according to the invention is attached close to the starboard end of the stern, while the other device is attached close to the port end of the stern.
• the pair of devices according to the invention is activated in an individual manner, i.e. the device at the end of the stern of the running boat which is closer to the water surface is activated to a higher degree than the device attached to the opposite end of the stern.
• embodiments of the invention are also conceivable with more than two devices according to the invention utilised for the above- described control strategy.

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• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• Ocean & Marine Engineering (AREA)
• Physics & Mathematics (AREA)
• Fluid Mechanics (AREA)
• Transmission Devices (AREA)

Applications Claiming Priority (2)

Publications (2)

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ID=47290913

Family Applications (1)

Country Status (5)

Cited By (1)

Families Citing this family (4)

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• 2011
  • 2011-11-10 SE SE1151064A patent/SE538063C2/sv unknown
• 2012
  • 2012-11-09 AU AU2012334037A patent/AU2012334037B2/en active Active
  • 2012-11-09 US US14/357,544 patent/US9415837B2/en active Active
  • 2012-11-09 WO PCT/EP2012/072215 patent/WO2013068515A1/en active Application Filing
  • 2012-11-09 EP EP12795365.1A patent/EP2776313B1/de active Active

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